Reenforced-rubber jar



May 15, 1928.

L. E. KLUG l REENFORCED RUBBER JAR Filed Jan. 16. 1922 AMJ? Patented Mayv 15, 1928.

VuruTEDv STATES PATENT v- OFFICE.l

I Lor-IIs EL ILUG, oF IN'DIANAPoLIs, INDIANA. AssIeNoIzl 'ro RUB-TEX PRODUCTS, INC.,

oF INDIANAPOLIS. INDIANA,

A CORPORATION 0F INDIANA.

aEEFoRcED-BUBBER JAR.

Application tiled-January 16, 1922. Serial No. 529,731.

It is the object of my invention to reenforce and strengthen a hquld container, and more especially a storage-lmttery Jar, espe- Y -cially at the points where it is most liable to break; and particularly to do soinconnection .with a battery jar such as that shown in ,myPatent No. 1,394,558, granted October 25, 1921. It is my further object to provide for the mounting of the handles of the 10. battery jar, vpreferably in'connection with such reenforcement, was to obviate any.

spring or bulge in the end of the battery jar when a lateral force is brought against the handle, as by the hold-down clamp or by a blow, tending fto cause lthe compound to breakaway from the end of the jar and pei'- mitting the acid to creep out.

In carrying out my invention, I build up the battery jar or other container of'slieets of. rubber or rubber composition and vulcanize it under pressure as explained insuch patent, preferably using sheets which are themselves laminated; and at suitable places I provide reenforcementswhich are put in place between the sheets of rubber or rubber composition when the jar or other container is being built up and are embedded in place within the' integral whole which is-formed from these; rubber sheets during the vulcan izing under pressure. Further, I preferably l join'the handles to the walls of the battery jar close to the edges ofthe faces to which the handles are attached, so that there will be substantially no tendency to bow the sides of the jar inward or outward in the handling of the battery, as such bowing results in breaking the battery cell at the. top` with the well understood difficulties consequent/each outer wall, suitable reenforcements are'I placed between sheets, and these reenforce-` upon such breaking: this handle-jointing feature may be used without the reenforcing feature.' but is tion therewith.

The accompanying drawing illustrates my invention; Fig. 1 is a phantom perspective view of a battery jar embodying my invention.` showing a simple reenforcement embedded therein at the most troublesome preferably used in conjunc.

more complete reenforcements, with the reentor'cements complete though the battery liai' walls al'e broken away; Fig. 3 is a per-f forcement in position between sheets of rub- ,ber or rubber composition; Fig. 5 is a frag mental end ,elevation of a battery jar with lits lifting handle, with the handle partly broken away, the handle beingmounted in accordance with my inventionl to reduce strain on the battery-jar end; Fig. 6 is a perspective view of the screw and grommet used for attaching the handle of Fig. 5; and Fig. 7 is a fragmental view showing a jar with a. reinforced handle in accordance with my invention.

` I have illustrated my invention in connection with a plural-cell battery jar. This is made by being built up of sheetsdtl ber or rubber composition vulcanize 4into an integral whole within a mold 1-1 by the pressure exerted by wedging plural-member cores 12. as set forth in my aforesaid patent.

lPreferably 'theindivi'dual sheets 10 a're October 24,1921, though this is not essential to the present invention.

and vulcanizing operation, with the reen-- of rub- In placing in the mold the superposed i sheets 10, of which there are a plurality in ooi.

within the body'lof the. rubberfor rubber composition when the vulcanizing.operation under' pressure occurs. These reenforcements may take-different forms, accordingto the service the battery jaror other container is t have. -In Fig. 1 there is shown a simple reenforcement, consisting of a simple metal bar 1 5 at each end, suchbar extending across the end of the battery'jar and preferably having its ends bent 'to extend .part way along the sides ofthe4 battery jar. .These bar reenforcements are `shown in fulllines -in Fig. 1, the battery box itself being shown in phantom, butl thelse bars Vare actually embedded in the walls of the battery vj ar. Preferably the reenforcing bars are provided with holes 16 at various places, for more securely holding the bars in place for in the vulcanizing operation under'pressure the rubber is forced through such holes 1 6 and-'thus additional anchorage is provided. Instead of simple bars such as shown in Fig. 1, I may provide a complete metal frame-work 17, as illustrated 4in Figs.

2 and 4. This is bult lup in any desiredl form, usually wlth upper and lower recta-ngular members 18 land 19 conforming to thevshape of the battery jar and of proper size for embedment in the walls thereof, with upright spacing members 20 connecting such upper and lower rectangular members, all these `members preferably being provided with holes 16 for additional vanchorage as' above referred to. The sheets 10 ofgrubber i or rubber composition are placed in the mold 11 with the frame-work 17 between the inner and outer sheets, as lis clear from Fig. 4, so that .when the vulcanizing operation under pressure occurs-such framework will be. completely enveloped and embedded bythe flowing of the rubber under the pressure. If desired, in place ef a built-up "frame-work `17, a suitable screen structure 21 -lv strengthen the walls, and preventfthem from bowing and `breaking-under conditions which would cause such bowing and breakg if the reenforcement were not provided. This bowing and breaking is particularly liable to. occur in the end walls, to which the handles are attached, as by a blow orjby the pull of the hold-down clamp, and even though the bowing is only temporary it causes the breaking of the seal at the top of the end cell, with the disadvantages whichresult from such breaking of the seal, such as creeping of the acid. By keeping the seal intact at-the top of each cell,

the life of the battery is greatly prolonged. The handle which h as ordinarily been provided is ofthe. type of the handle 25 in Fig..1. consisting of a horizontal handle portion from the ends of which legs project downward for insertion or embedment in` holes in the end walls of the battery jar near the middle of such walls. Such handlesI can be used with the renforcement above described, but because of their mounting in the end walls near the middle thereof they are liable to cause undue bending strain on such end walls. In order to avoid such bending strain, and thus to make the reen forcement more effective, or even in some instances to make it unnecessary to use reenforcement in the walls, I provide handles suchv as shownin Figs. 2, 5, and 7 which extend substantially across the end walls of the battery jar, and connect with the end walls preferably at'or'near the vertical edges thereof.

The 'handle suitably mounted, as shown in Figs. 2 and 5; or` it may be an integral handle, preferably reenforced, as shown in Fig. 7. If a separate handle, it may be made of a sheetmetal stamping 26, conveniently mounted bg' screws 27; and these screws 27 extendl t rough thelaterally extended ends 28 of the vhandle 26 into internally threaded members' embedded in the batteryend-wall near the edges of such end wall. The internally 90 threaded members are preferably the reenforcement themselves when bars or other members capable \of taking internal threads may be a separatel handle,

are used for the reenforcements, the upper rectangular member 17 in Fig.2 being shown provided with such threaded holes 29; but if no reenforcements are used, or if a mere screen is usedy as a reenforcement, such threaded holes are .provided in special grommets 30, as is clear from Figs. 3, 5, and 6. These holes als/ serve to support the frame-work or reenforcement, or to Support thegrommets 30, in proper position between thev sheets during the operation of building up the battery jar, by the use of suitable pins 3l provided in the mold 11 in position to project into such holes and hold the reenforcement or grommet in proper position. 'In addition to the end screws' 27 for mountmg the handle 26, a lower central screw 32 may be used ifdes'ired, at a pointmidway of thefwidth of the end wall of the battery jar but lower than .the screws 27 .f This screw may be received in a grommet 30, or in a hole 33 provided in the lower -corner of a V-shaped member 34' depending Afrom the upper rectangular member -17, as

is shown in Fig. `2. IVhen the screw 32 is used, it extends'through a lower portion 35 dle-portio which has the hand grip 36. so that it willv not partake of the movements which such hand grip may have. With this mounting of the handle, by-its outer ends, there `is no tendency to pull apart the end walls of the battery by bowing them outward when the handles26 are forced outf-k ward in 'any way. thus greatly lessening the" liability of breaking vthe seal in `the end cells. l l

Instead of separate handle 2.0, I may use .of the handle. separate from the upper hanan integral handle 37, made of the same material as the battery-jar itself and if desired formed of the same sheets of which the end-I walls are bui'lt up. The handle 37 is con-v nected to the end walls near the lateral edges thereof, or near the ends of the. top

edges of the end walls, and is separated from such end walls throughout the intermediate part of such top edges, as is clear from Fig. 7. The handle 37 is preferably reenforced, conveniently by a central rod `or `wire 38 which projects downward from the ends of the handle into the end wall and which preferably overlaps or joins theendwallreenforcenient if there is any.

I claim as my invention:

1. A liquid container, having side and end walls formed of vulcanized rubber material, a reenforcing strip embedded in a wall of said container. near the top thereof and extending from the ends of such wall into adjacent walls, a second reenforcin strip embedded in such wall near the thereof and extending into adjacent walls, said reenforcing strips being narrow relative to the height of saidwall to leave the major portion of said wall consisting solely of rubber material, said reenforcing strips being put in place prior to vulcanization so that they are embedded during the vulcanization period.

2. A liquid container, having side and end walls formed of vulcanized rubber material, a reenforcing strip embedded in a wall of said container near the top thereof and extending from the ends of such wall into adjacent walls, said reenforcing strip being narrow relative to the height of said wall to leave the major portion of said Wall consisting solely of rubber material, said reen'- forcing strip being put in place prior to vulcanization so that 'it is embedded during the vulcanization period. j

3. A liquid container, having side and end walls formed of vulcanized rubber material, a reenforcing strip embedded in a wall of said container and extending from the ends of such walll into adjacent Walls, said reen- .forcing strip being narrow relative to the height of said wall to leave the major portion of said wall consisting solely of rubber material, said reenforcing strip being put in place prior to vulcanization so that it is embedded during the vulcanization period.

4. The combination set forth in claim 1 with the addition of a vertically extending strip embedded in said w-all near each end thereofand joined to said other strips.

5. A liquid container, having side and end walls formed of vulcanized rubber material, a continuous reenforcing strip embedded in such walls and'extending around said cntainer near the top thereof, a second continuous reenforcing strip embedded in such walls and extending around said container near the bottom thereof, and vertically disposed strips also embedded in such walls and extending between said top and bottom strips.

G. A liquid container comprising a bottom and side and end walls of vulcanized rubber material, and reenforcements which are embedded in opposite walls thereotl and extend into Walls adjacent to said opposite walls, and handles on said opposite walls and connected to reenforcements therein.

7 A'liquid container, having side and end walls formed of vulcanized rubber material, a reenforcing strip embedded in a wall of said container near the top thereof, a second reenforcing strip embedded in such wall near the bottom thereof,- said v'reenforcing strips being narrow relative to the height 'of said wall to leave the major portion of said wall consisting solely of rubber material, said reenforcmg strips being put 1n place prior to vulcanlzation so that they are embedded during the vulcanization period. ottoni 8. A liquid container comprising a bottom and side and end walls of vulcanized rubber material, and reenforcements which are embedded in opposite walls thereof, and handles on said opposite walls and connected to the reenforcements therein.

9. A battery jar having a bottom and 'side and end walls, an-d a handle on each oftwo opposite walls of said jar, each end of each of said handles being connectedto its associated wall much nearer the' side edges of such wall than the middle of such wall.

10. The combination set forth in claim 7 with the addition of a vertically extending thereof and connected to said other strips.

11. A battery jar havingl a bottom and side and end walls, and a handle on each of twov opposite walls of said jar, each of said handles projecting upward from its associated' wall with the upwardly projecting handlepart joined to such wall much nearerthe side edges thereof than the middle thereof and1 free from the intermediate part of such Wa l 12.,A liquid container, having side and end walls formed of vulcanized rubber material, a continuous reenforcing strip embedded in such walls and extending around said container, said reenforcing lStrip' being narrow relative to the heightof said wall to leave the major portion of said wall consisting solely of rubber material, said reenfoicing strip being put in place prior to vulcanization so that it is embedded during the vulcanization period.

iop

.strip embedded in said wall near each end tainer having handle inserts embedded in the end Walls thereof. said inserts having portions extending substantially the Width of said Walls near'the top thereof.

15. A. hard rubber storage battery container having hand-1e inserts embedded in the end Walls thereof, said inserts having portions extending substantially the Width of said walls near the top thereof, said inserts having threaded openings and handles conl0 nected to said inserts by screws extending into the openings.

fn witness whereof, I have hereunto set lny hand at Indianapolis, Indiana, this 12th day of January, A. U. one thousand nine 15 LOUS E. KLUG. 

